libgomp.c++/static-aggr-constructor-destructor-{1,2}.C: Fix scan-tree-dump

In principle, the optimized dump should be the same on the host, but as
'nohost' is not handled, is is present. However when ENABLE_OFFLOADING is
false, it is handled early enough to remove the function.

libgomp/ChangeLog:

	* testsuite/libgomp.c++/static-aggr-constructor-destructor-1.C: Split
	scan-tree-dump into with and without target offload_target_any.
	* testsuite/libgomp.c++/static-aggr-constructor-destructor-2.C:
	Likewise.